New LINUX users are asking for help. named can be started successfully but is in a dead state.

I am new to LINUX and ask for help. named can be started successfully but is in the dead state-Linux general technology-Linux technology and application information. The following is a detailed description. Number of zones: 2
Debug level: 0
Xfers running: 0
Xfers deferred: 0
Soa queries in progress: 0
Query logging is OFF
Recursive clients: 0/1000
Tcp clients: 0/100
Server is up and running
The named is dead, but the pid file is still saved.


Named code:
Options {
Directory "/var/named ";
Pid-file "data/cache_dump.db ";
// Allow-query (any );
Query-source port 53;
Dump-file "/usr/local/named/data/cache_dump.db ";
Statistics-file "/usr/local/named/data/named_stats.txt ";
};
Zone "." in {
Type hint;
File "named. root ";
};
Zone "qwe.com" in {
Type master;
File "qwe.com. zone ";
};
Zone "localhost" in {
Type master;
File "localhost. zone ";
};
// Zone "0.0.127.in-addr. arpa" in {
// Type master;
// File "localhost. rev ";
//};

Code:
$ TTL86400
@ In soa @ dns.qwe.com .(
2010101801; serial (d. adams)
3 H; refresh
15 M; retry
1 W; expiry
1D); minimum
@ IN NSdns.qwe.com.
Dns IN A192.168.10.254
Www IN A192.168.10.254

The named program can be started, but I don't know why it will die. I cannot find the named program in the process. I tried several methods and still couldn't find the cause. Thank you!